最近项目中用到FindControl和GridView，整理了一下几种使用方法，留作资料。1、在选择（SelectedIndexChanged）事件中使用 //获得被选择行的TextBox1 protected void gv1_SelectedIndexChanged(object sender, EventArgs e) { //Control c = this.gv1.Rows[this.gv1.SelectedIndex].FindControl("TextBox1"); //TextBox tb = (TextBox)c; //tb.Text = "TextBox"; TextBox tb = (TextBox)this.gv1.Rows[this.gv1.SelectedIndex].FindControl("TextBox1"); tb.Text = "hello"; }2、在编辑行（RowEditing）事件中使用 //编辑行时，找到TextBox1 protected void gv1_RowEditing(object sender, GridViewEditEventArgs e) { //设置要编辑行的索引 gv1.EditIndex = e.NewEditIndex; GridViewBind(); TextBox tb = (TextBox)this.gv1.Rows[e.NewEditIndex].FindControl("TextBox1"); Response.Write(tb.Text); }3、在取消编辑行（RowCancelingEdit）事件中使用 //取消编辑时，找到TextBox1 protected void gv1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { TextBox tb = (TextBox)this.gv1.Rows[e.RowIndex].FindControl("TextBox1"); Response.Write(tb.Text); gv1.EditIndex = -1; GridViewBind(); }4、在行绑定（RowDataBound）事件中使用 //获得行数据绑定中的TextBox1 protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e) { // 对于在RowDataBound中Find,可以用if (e.Row.RowType == DataControlRowType.DataRow)来限制Find的范围,因为Find默认是在HeaderTemplate中找,如果不限定范围,在HeaderTemplate中找不到,自然就返回null,然后就出错了,DataControlRowType枚举中的DataRow确定是数据行. //if (e.Row.RowType == DataControlRowType.DataRow) //{ // TextBox tb = (TextBox)e.Row.FindControl("TextBox1"); // tb.Text = "databind"; //} //如果在DataGrid的页眉和页脚： //if (e.Row.RowType == DataControlRowType.Header) //{ // TextBox tbheader = (TextBox)e.Row.FindControl("txtHeader"); // tbheader.Text = "Head"; //} ((TextBox)this.gv1.Controls[0].Controls[0].FindControl("txtHeader")).Text = "Head"; if (e.Row.RowType == DataControlRowType.Footer) { TextBox tbfooter = (TextBox)e.Row.FindControl("txtFooter"); tbfooter.Text = "Footer"; } }5、在行命令（RowCommand）事件中使用 //行命令时间中找到TextBox1 //如果使用GridView默认的模式,e.CommandArgument自动棒定为该行的Index,这时候只要指定gridview1.Rows[Convert.ToInt32(e.CommandArgument)].FindControl("xxx")就可以了,但是如果转化为Template,e.CommandArgument并不会自动绑定任何值,需要手动绑定,可以在<ItemTemplate></ItemTemplate>手动写CommandArgument="<%# ((GridViewRow) Container).RowIndex %>",把这个行的 Index绑定绑定到该e.CommandArgument就可以了. protected void gv1_RowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName.ToLower() == "change") { TextBox tb = (TextBox)this.gv1.Rows[Convert.ToInt32(e.CommandArgument)].FindControl("TextBox1"); Response.Write(tb.Text); } }其他事件中的使用，和上面列举的类似附上，前台代码:UseTest3.aspx<%@ Page Language="C#" AutoEventWireup="true" CodeFile="UseTest3.aspx.cs" Inherits="UseTest3" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>无标题页</title></head><body> <form id="form1" runat="server"> <div> <asp:GridView ID="gv1" runat="server" AutoGenerateColumns="False" OnSelectedIndexChanged="gv1_SelectedIndexChanged" OnRowEditing="gv1_RowEditing" OnRowDataBound="gv1_RowDataBound" ShowFooter="True" OnRowCommand="gv1_RowCommand" DataKeyNames="employeeid" OnRowCancelingEdit="gv1_RowCancelingEdit"> <Columns> <asp:TemplateField> <HeaderTemplate> <asp:TextBox ID="txtHeader" runat="Server"></asp:TextBox> </HeaderTemplate> <ItemTemplate> <asp:TextBox ID="TextBox1" Text='<%# Bind("employeeid")%>' runat="server"></asp:TextBox> </ItemTemplate> <FooterTemplate> <asp:TextBox ID="txtFooter" runat="server"></asp:TextBox> </FooterTemplate> </asp:TemplateField> <asp:BoundField DataField="lastname" HeaderText="LastName" /> <asp:BoundField DataField="firstname" HeaderText="FirstName" /> <asp:ButtonField CommandName="select" Text="选择" /> <asp:ButtonField CommandName="change" Text="change" /> <asp:CommandField ShowEditButton="True" /> </Columns> </asp:GridView> </div> </form></body></html>
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